6.
W HAT ARE SOME
9.
PITFALLS YOU SEE END -
FUTURE FROM THE
INDUSTRY ’ S STANDPOINT ?
USERS COMMONLY
ENCOUNTERING IN
EXPANSION
JOINT APPLICATIONS ?
H OW CAN
THEY AVOID OR RESPOND TO
SUCH PITFALLS ?
4.
W HAT ARE SOME OF THE
VARIOUS EXPANSION
JOINT ACCESSORIES , AND DO
THEY AFFECT FLUID
CONVEYANCE ?
Retainer rings should be used for all
elastomer expansion joints to distribute
bolting pressure evenly and prevent
flange damage during tightening. The
rings are installed directly against the
back of the expansion joint flanges and
bolted through to the mating pipe flanges.
This helps to ensure that a seal is created
between these flanges.
Control units are recommended for
most applications to prevent damage
due to excessive pipe movement. These
units consist of two or more control rod
assemblies to minimize potential damage
from excessive axial movement. They also
prevent over-elongation and excessive
compression if compression nuts are used.
Flow liners extend service life by
protecting elastomer expansion joints
from abrasive materials, particularly in
high-velocity applications. These liners
prevent fast-flowing fluids or highly
abrasive slurries from prematurely
degrading the expansion joint tubes.
5.
W HAT ARE SOME BEST
PRACTICES YOU CAN
OFFER IN THE AREAS
OF SPECIFICATION ,
INSTALLATION AND
MAINTENANCE OF EXPANSION
JOINTS TO ENSURE LONG - TERM
PERFORMANCE ?
The service life of an elastomer expansion
joint is subject primarily to